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Summary

  • Dr. Denis O'Brien, MD is a board certified orthopedic surgeon in Olney, Maryland. He is currently licensed to practice medicine in Maryland and District of Columbia. He is affiliated with MedStar Montgomery Medical Center, Holy Cross Hospital, and Johns Hopkins Howard County Medical Center.

Education & Training

  • MedStar Health/Georgetown-Washington Hospital
    MedStar Health/Georgetown-Washington HospitalResidency, Surgery, 1983 - 1985
  • Georgetown University School of Medicine
    Georgetown University School of MedicineClass of 1983

Certifications & Licensure

  • MD State Medical License
    MD State Medical License 1992 - 2025
  • DC State Medical License
    DC State Medical License 1986 - 1994
  • American Board of Orthopaedic Surgery Orthopaedic Surgery

Awards, Honors, & Recognition

  • Top Doctors:Washington DC Area Castle Connolly, 2012
  • Top Doctors:Baltimore Area Castle Connolly, 2012
  • Top Doctors:Washington-Baltimore Castle Connolly, 2012

Press Mentions

  • Beacon Hospital to Lodge €75m Extension Plan
    Beacon Hospital to Lodge €75m Extension PlanAugust 20th, 2021

Hospital Affiliations